package edu.ynu.se.xiecheng.achitectureclass.interceptor;

import edu.ynu.se.xiecheng.achitectureclass.util.JwtUtils;
import io.jsonwebtoken.Claims;
import javax.servlet.http.HttpServletRequest;  // 修改为 javax.servlet
import javax.servlet.http.HttpServletResponse; // 修改为 javax.servlet
import lombok.extern.slf4j.Slf4j;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Configuration
public class LoginInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 进行用户登录校验
        // 1. 从header中获取token
        // 2. 验证token
        String token = request.getHeader("user_token");
        log.info("从header中获取token, token:" + token);
        Claims claims = JwtUtils.parseToken(token);
        if (claims == null) {
            // token是不合法的
            response.setStatus(401);
            return false;
        }
        return true;
    }
}
